Oil and gas engineer is equally non descriptive. You might just be connecting the fuel source up for central heating boilers. Guess we equally have to disregard what you say. As we do for all the other *experts* on here.
An amusing distraction, but you'll find Jim over on Twitter. Problem you've got is that he hands you back your **** on a plate, hence your pretence that someone else (who you think you can bully) is him on LSE. Pathetic.